import java.util.Scanner;

public class IfExercise01 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入两个double类型的数据：");
        double ifa = scanner.nextDouble();
        double ifb = scanner.nextDouble();
        if (ifa > 10.0 && ifb < 20.0) {
            System.out.println("两数之和为：" + (ifa + ifb));
        }
    }
}
